Piston ring



i 15' 1925' A. E. cmum'o'r PISTDN BEING:4 sind June 2d. 1925 Patented Sept. l5, 1925.

rarrfuv'rv OFFICE.

ALPHONSE E. COURTOT, 0F WODHAVEN, NEW YORK.

rrsron eine.

Application filed June 20, 1925.

To all whom, t may concer/11,:

13e it known that I, ALPHONSE ll. Counro'r, aeitizen of `the Uni@y States,.residing at VVoodhaven, L. I., in "Le county of Queens 'and State of New `Yorlr, have invented certain new` and useful Iinprovcn'ients in a Piston Ring, oit which the following is a specification.

The present invention relates generally to pistons and more particularly to improvements in the rings that are used as packing on pistons. p

The principal object of the invention is to provide a leak-proof ring which has incorporated therewith means for expanding it outwardly of the piston against the inner wall of the cylinder so as to prevent the leakage of gas, liquid, or the like between the pistons and the inner cylinder wall.-

Another object of the invention is to provide a ring or' this nature having the expansible means associated therewith wherein the feature of expansibility may be adjustably controlled.

vA still further objectief the invention is to provide a piston and ring of this nature which are simple in construction, strong, durable, comparatively inexpensive to manu facture, elicient and reliable in use, not like ly to easily become out of order, and otherwise well adaptedto the purpose Jfor which they are desiffned.

"With the :ibove and numerous other ob- 'jects in view as will appear as the deseription proceeds, the invention resides in eertain novel features of construction and in the eombination'and arrangement of parts as will be hereinafter more fully described and claimed.

In the drawing- Figure 1 is a sectional elevation of a 'piston and ring struct-ure embodying the features oi' my invention,

Fig. 2 is a fragmentary plan `view of one of the outer rings,

Fig. 3 is a plan view of'one of the inner rings, and

Fig/4 is another plan View thereof taken from the other side? Referring to the drawing in detail, it will be seen that 5 designates a piston having -an outwardly disposed annular flange 6 extending from one end thereof.' .Any suitable rod 7 is associated with the piston. lOn the opposite end of the body 5 there is provided an annular recessS so as to torni an annular Serial No. 38,46u.

shoulder 9. A pair of outer rings 10 of the split type as is indicated at 11 are disposed about the cylindrical surface of the body in superimposed relation to each other, one of said rings resting on the flange 6. The inner surfaces of these outer split rings 10 are beveled as is indicated at 12, one in ner surface being beveled in an opposite drection to the other as is indicated to ad. vantage in the sectional portion-of Fig. 1. Inner rings 13 are disposed about the cylindrical surface of the pistons 5 and are' provided with outer beveled surfaces 14 disposed at similar angles as are the surfaces 12. These rings 13 are provided with pockets 15 extending inwardly from their abutting ends and spring" 16 are disposed in said pockets being tensioned to normally separate the rings 13 from each other, and be cause of the beveled surfaces 12 and 14 function as a wedge on the principle of the inclined plane so as to expand the outer rings 10. The. functioning of these rings 10- and 13 and the spring 16 seems to be obvious. A plate 17 is detachably fixed as at 18 to the end of the piston 5 opposite to that provided with the liange 6 and holds the rm 10 and 13 assembled on the piston. Sald plate has its outer portion offset in relation to its inner portion so as to lit in the recess 8 and' abut the shoulder 9, thus tending` to prevent any undesirable play between the plate and the piston. Y

If desired, the outer ringslO may be constructed with a plurality of radially disposed orioes 19 extending inwardly 'from i Iannular grooves v20 so that oil mayl pass from the grooves through the orices and lubrioate the surfaces 12 and 14. If de-lmi sired, a key 21 may be provided on the plate 17 for engaging in a way adjacent ring 10 and a' similar key may be provided en the ange 6 for engagement in a way provided on the adj aeent ring 10 Aso as to prevent rotary' movement of the rings. in relation to the'pston and'also to hold the split ends 11 of one ring diametrieally opposite to the similar ends of theother rings as is indicated in full and dotted lines 1n. Fig. l'. n order to control adjustably the expalr' sion of the rings 10 caused by the .rings 13 provided on 'the and springs 16, I'have constructed the rings I 10 adjacent their ends 11 with pockets 23 so that an arcuatebolt 24 curved coneentrically' with the general cnrvatnre of the ring may ie nuts 1% it niii i may be. ensiened, enti-ei the expzinsiiniity ie ringe' O pini 'iiie cima-:fir on, opel-eintaagefs oi my im@ 'i n'nc'iei'nimgni witinnii. ei i nii on iheieeit ".iiie o1 iiie, invenion inist 1'/ by Way of efznnjjio i' is 'pi'oi'en eniniim. of ifs {eatin-es of :irivzminiigge "ienienu of the inv'entii'ni ii i" ion. i'iowever, it is iei'ons eimnges in. iie de- :inii in the combinaie parte, muy ne ieuiing from fine Jgiiii :isA iieieinxi'ei u fr :iei'iiieing any oi ndvzxntnget, 1LWiieiiniy inveniion7 nu :it

'cie of inaniiifueini'in :i pis mi ying' of spiii, 'ipe having ends 5 i'n'veinniil fiispoeei in. cioflto proximity ilo email oi'iiei i V i 1* 'iii i'eeeSS/es, :in :irme

faces, iesiiient moans ieni'iing; Le senin-nie the inne* inge .iii'oniezieii' other, :i pail' of expiinsibe spilt i'irei; wings und about the pieten and reviiienii i'iezms associated wiii the ends of the split,k

"rings te urge tiiein toward eueir othe.

ininsiiiie nornmiiy disposed in cios; proximity in eneii. f

other :mfi pi'oviiefi with rece: :in :iieiuiie boit extending' fiii'ongh iiie ends. of iie ring ierniinnting within the, .ieeessee` n heini on one end of iie boit, springs on the boil; one in euch News, n mit on the boit Afor tensioning' anni springs to urge the ends oi "iie Springs ien'niil euch oihei, :mii :L Cover Pinte fixed to one end of the ring' so :is to iie (iisposeii over noii recesses.

:`S in n piston sii-nenne, n piston. :i 'paxil' of continuons rings; disposeii :iiionlz miie pis; ion anni iiziving opposi'eiy imfiined. oni'ei' .Cin inves, i'esiiient inezins tending; 50pm initie ine innei` rings Viii-oni eaeii other, n pail' oi expzinsiiiie fipiit rings disposed about the finzi', iii :ind about the pision, tile ends of s-iifi Hp ifi'ings iiein.; provided. with reces# est, infennie moito extending ihlongh the omis oi iiie :ipiit rin" anni leiniinni'injf in the i'ezressseS, :i heini on one end of enen boli., lungs on iiiie iiei's? one in esieii recess, nini nuis on line imiis for tensioning Suid Springs ifm' kligging iin: eniis of ne split rings toward enen oiiiieig.

in tesiiinony whereof niix my Sipjnnni'e.

opposiiiely ineiineii ronei sur-f disposed about iiie '.irst' 

